Yoo

Setting my camp down here to see what people recommend

https://www.mangago.me/read-manga/tomb_raider_king/

https://www.mangago.me/read-manga/the_chaebeol_s_youngest_son/

This one the bully is placed in the person he bullied body so it’s kinda revenge
https://www.mangago.me/read-manga/life_completely_ruined/

Not revenge, but a nice iskeai funny and it’s kinda popular so you might have read it

https://www.mangago.me/read-manga/what_happens_when_the_second_male_lead_goes_on_strike/

This one is not reincarnation or iskeai but the revenge plot is nice with multiple characters seeking revenge and good fighting and training to be better fighters and there is a webcomic that is a continuation that is currently being updated.

https://www.mangago.me/read-manga/castle/